Home / 12,266.40-18,390.60-4,867.20

Finding the Fourth Proportional to 12,266.40, 18,390.60 and 4,867.20

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Solution

The fourth proportional to 12,266.40, 18,390.60 and 4,867.20 is: 7,297.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,266.40 : 18,390.60 = 4,867.20 : x
  2. Step 2: Convert to fraction form
    12,266.40/18,390.60 = 4,867.20/x
  3. Step 3: Cross multiply
    12,266.40x = 18,390.60 × 4,867.20
  4. Step 4: Simplify right side
    12,266.40x = 89,510,728.32
  5. Step 5: Solve for x
    x = 89,510,728.32/12,266.40
  6. Step 6: Final answer
    x = 7,297.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.